Door HYUNDAI SONATA 2021 Owners Manual

6-24
Parking brake warning light
Check the parking brake
warning light by placing the
ignition switch to the ON
position (do not start the
engine).
This light will be illuminated when the
parking brake is applied with the ignition
switch in the START or ON position.
If the parking brake warning light
remains on after the parking brake
is released while engine is running,
there may be a malfunction in the
brake system. Immediate attention is
necessary.
If at all possible, cease driving the vehicle
immediately. If that is not possible,
use extreme caution while operating
the vehicle and only continue to drive
the vehicle until you can reach a safe
location.
Emergency braking
If there is a problem with the brake
pedal while driving, emergency braking
is possible by pulling up and holding
the EPB switch. Braking is possible only
while you are holding the EPB switch.
However, braking distance will be longer
than normal.
WARNING
Do not operate the parking brake while
the vehicle is moving except in an
emergency situation. It could damage
the brake system and lead to a severe
accident.
Information
During emergency braking, the parking
brake warning light will illuminate to
indicate that the system is operating.
NOTICE
If you continuously notice a noise or
burning smell when the EPB is used
for emergency braking, have system
checked by an authorized HYUNDAI
dealer.
When the EPB (Electronic Parking Brake)
does not release
If the EPB does not release normally,
contact an authorized HYUNDAI dealer
by loading the vehicle on a flatbed tow
truck and have the system checked.
Auto Hold
The Auto Hold maintains the vehicle in a
standstill even though the brake pedal is
not depressed after the driver brings the
vehicle to a complete stop by depressing
the brake pedal.
To apply :
ODN8069015
1. With the driv er's door and engine
hood closed, depress the brake
pedal and then press the [AUTO
HOLD] switch. The white AUTO HOLD
indicator will come on and the system
will be in the standby position.
••CLUSTER
While Driving

06
6-25
ODN8069016
2. When you stop the vehicle completely by depressing the brake
pedal, the Auto Hold maintains the
brake pressure to hold the vehicle
stationary. The indicator changes from
white to green.
3.

The v
ehicle will remain stationary
even if you release the brake pedal.
4.
If EPB is applied, A

uto Hold will be
released.
To release :
• If you press the accelerator pedal
with the gear in D (Drive), R (Reverse)
or Manual shift mode, the Auto Hold
will be released automatically and the
vehicle will start to move. The AUTO
HOLD indicator changes from green
to white.
• If the vehicle is restarted using the
cruise control toggle switch (RES+
or SET-) while Auto Hold and cruise
control is operating, the Auto Hold will
be released regardless of accelerator
pedal operation. The AUTO HOLD
indicator changes from green to
white.
WARNING
When the AUTO HOLD is automatically
released by depressing the accelerator
pedal, always take a look around your
vehicle.
Slowly depress the accelerator pedal
for a smooth start.
To cancel :
ODN8069017
1. Depress the brake pedal.
2.

Pr
ess the [AUTO HOLD] switch.
The AUTO HOLD indicator will turn off.
Information
• The Auto Hold does not operate when:
-The driver's door

is opened
-The engine hood is opened
-The gear

is in P (Park)
-The EPB is applied
• For

your safety, the Auto Hold
automatically switches to EPB when:
- The driver's door

is opened with the
gear in D (Drive) or N (Neutral)
- The trunk is opened with the gear

in
R (Reverse)
- The engine hood is opened with the
gear

in D (Drive) or N (Neutral)
-The vehicle stops for

more than 10
minutes
- The vehicle stands on a steep slope
-The vehicle moves several times
••CLUSTER

6-26
In these cases, the parking brake
warning light comes on, the AUTO
HOLD indicator changes from green
to white, and a warning sound and a
message will appear to inform you that
EPB has been automatically engaged.
Before driving off again, press foot
brake pedal, check the surrounding
area near your vehicle and release
parking brake manually with the EPB
switch.
• While operating Auto Hold, you may
hear mechanical noise. However, it is
normal operating noise.
NOTICE
If the AUTO HOLD indicator changes
to yellow, the Auto Hold is not working
properly. Contact an authorized
HYUNDAI dealer.
WARNING
• Depress the accelerator pedal slowly
when you start the vehicle.
• For your safety, cancel the Auto Hold
when you drive downhill, back up the
vehicle or park the vehicle.
NOTICE
If there is a malfunction with the
driver's door or engine hood open
detection system, the Auto Hold may
not work properly.
Contact an authorized HYUNDAI dealer.
Warning messages
OTM058187L
Parking brake automatically engaged
When the EPB is applied from Auto Hold,
a warning will sound and a message will
appear.
OIK057079N
AUTO HOLD turning Off!
Press brake pedal
When the conversion from Auto Hold to
EPB is not working properly a warning
will sound and a message will appear.
When this message is displayed, the Auto
Hold and EPB may not operate. For your
safety, depress the brake pedal.
While Driving

06
6-27
OIK057080L
Press brake pedal to deactivate AUTO
HOLD
If you did not apply the brake pedal when
you release the Auto Hold by pressing
the [AUTO HOLD] switch, a warning will
sound and a message will appear.
OTM058159L
AUTO HOLD conditions not met. Close
door and hood.
When you press the [AUTO HOLD]
switch, if the driver's door and engine
hood are not closed, a warning will
sound and a message will appear on the
cluster LCD display.
Press the [AUTO HOLD] switch after
closing the driver's door and hood.
Anti-lock Brake System (ABS)
WARNING
An Anti-Lock Braking System (ABS) or
an Electronic Stability Control (ESC)
system will not prevent accidents
due to improper or dangerous driving
maneuvers. Even though vehicle
control is improved during emergency
braking, always maintain a safe
distance between you and objects
ahead of you. Vehicle speeds should
always be reduced during extreme
road conditions. The braking distance
for cars equipped with ABS or ESC
may be longer than for those without
these systems in the following road
conditions.
Drive your vehicle at reduced speeds
during the following conditions:
• Rough, gravel or snow-covered
roads.
• On roads where the road surface is
pitted or has different surface height.
• Tire chains are installed on your
vehicle.
The safety features of an ABS or ESC
equipped vehicle should not be tested
by high speed driving or cornering. This
could endanger the safety of yourself or
others.
ABS is an electronic braking system that
helps prevent a braking skid. ABS allows
the driver to steer and brake at the same
time.

06
6-33
The Idle Stop and Go (ISG) system
automatically and temporarily shuts
down the engine when the vehicle
is stopped and idling to improve fuel
efficiency and reduce exhaust gas
emissions. (i.e. red stop light, stop sign,
and traffic jam).
The engine is automatically started upon
satisfying the starting conditions.
The ISG system is always active, when
the engine is running.
Information
When the engine is automatically started
by the ISG system, some warning
lights (i.e. ABS, ESC, ESC OFF, EPS,
and parking brake warning light) may
illuminate for a few seconds due to the
low battery voltage. However, it does
not indicate a malfunction with the ISG
system.
To Activate the ISG System
Prerequisite for activation
The ISG system operates in the following
situations.
• The driver's seatbelt is fastened
• The driver's door and hood are closed
• The brake vacuum pressure is
adequate
• The battery sensor is activated and
the battery is sufficiently charged
• Outside temperature is not too low or
too high
• The vehicle is driven over a constant
speed and stops
• The climate control system satisfies
the conditions
• The vehicle is sufficiently warmed up
• The incline is gradual
• The steering wheel is turned less than
180 degrees and then the vehicle
stops
Information
• The ISG system is not
activated, when the
prerequisites to activate
the ISG system are
unsatisfied. In this case,
the ISG OFF button indicator
illuminates, and the auto stop indicator
(
) illuminates in yellow on the
instrument cluster.
• When the above indicator remains
illuminated on the instrument cluster,
have the IGS system checked by an
authorized HYUNDAI dealer.
Auto stop
To stop the engine in idle stop mode
1.

Decr
ease the vehicle speed to 0 mph.
2.

Depr
ess the brake pedal with the shift
button in D (Drive) or N (Neutral).
The auto stop indicator (
) illuminates
in green on the instrument cluster, when
the engine stops.
Information
The driving speed must reach at least 3
mph (5 km/h) after an idle stop to stop the
engine in idle stop mode again.
In auto stop mode, when the driver
opens the hood, the ISG system will be
deactivated.
ISG (Idle Stop and Go) SyStem ( I f equ I pped)

6-34
When the system is deactivated:
ODN8069019
The ISG OFF button indicator illuminates.
If the message "Auto Stop is Off.
OIK057173N
Start vehicle manually", appears on the
LCD display with a beep sound, restart
the vehicle manually by depressing the
brake pedal with the vehicle shifted
to P (Park) or N (Neutral). For your
safety, restart the vehicle in the P (Park)
position.
Auto start
To restart the engine in the auto stop
mode
Release the brake pedal.
- When Auto Hold is activated, if you release the brake pedal, the engine will
be in the auto stop state. However, if
you depress the accelerator pedal, the
engine will start again.
The auto stop indicator () goes OFF on
the instrument cluster, when the engine
is restarted.
The engine is automatically restarted in
the following situations.
• The brake vacuum pressure is low
• The engine has stopped for about 5
minutes
• The air conditioning is ON with the fan
speed set to the highest position
• The front defroster is ON
• The battery is weak
• The cooling and heating performance
of the climate control system is
unsatisfactory
• The vehicle is shifted to P (Park) when
Auto Hold is activated
• The door is opened or the seatbelt
is unfastened when Auto Hold is
activated
• The EPB switch is pressed when Auto
Hold is activated
The auto stop indicator (
) blinks in
green for 5 seconds on the instrument
cluster.
While Driving

6-36
Battery Sensor Deactivation
ODN8A069204
[A] : Battery sensor
The battery sensor is deactivated, when
the battery is disconnected from the
negative pole for maintenance purpose.
In this case, the ISG system is limitedly
operated due to the battery sensor
deactivation. Thus, the driver needs
to take the following procedures to
reactivate the battery sensor after
disconnecting the battery.
Prerequisites to reactivate the
battery sensor
Switch "ON" and "OFF" the ignition one
time. Park the vehicle for a minimum of 4
hours with the hood and all doors closed.
Pay extreme caution not to connect any
accessories (i.e. navigation and black
box) to the vehicle with the engine in the
OFF status. If not, the battery sensor may
not be reactivated.
Information
The ISG system may not operate in the
following situations.
-Ther

e is a malfunction with the ISG
system.
- The battery is weak.
-The brake vacuum pr

essure is low.
If this occurs, have the ISG system
checked by an authorized HYUNDAI
dealer.
NOTICE
• Use only a genuine HYUNDAI
Absorbent Glass Mat (AGM) battery
for replacement. If not, the ISG
system may not operate normally.
• Do not recharge the Absorbent Glass
Mat (AGM) battery with a general
battery charger. It may damage or
explode the Absorbent Glass Mat
(AGM) battery.
• Do not remove the battery cap. The
battery electrolyte, which is harmful
to the human body, may leak out.
While Driving

6-80
OHY050024
After the vehicle stops, when an
approaching vehicle from the rear area is
detected as soon as a passenger opens a
door, Safe Exit Assist will warn the driver
with a warning message and an audible
warning to help prevent a collision.
CAUTION
Warning timing may vary depending on
the speed of the approaching vehicle.
Detecting sensor
ODN8069031L
The rear corner radars are sensors
located inside the rear bumper to detect
the side and rear areas. Always keep the
rear bumper clean for proper operation
of Safe Exit Assist.
NOTICE
For more details on the precautions of
the rear corner radars, refer to “Blind-
Spot Collision Warning (BCW)” or
“Blind-Spot Collision-Avoidance Assist
(BCA)” section in chapter 6.
Safe e XI t aSSISt (S ea ) (I f equ I pped )
While Driving

6-82
OTMA058094
Warning Volume
With the Engine Start/Stop button in the
ON position, select ‘Driver Assistance →
W

arning Volume’ from the Settings menu
to change the Warning Volume to ‘High’,
‘Medium’, or ‘Low’ for Blind-Spot Safety
system.
If you change the warning volume,
the Warning Volume of other Driver
Assistance systems may change.
CAUTION
• The setting of the Warning Timing
and Warning Volume applies to all
functions of the Warning.
• Even though ‘Normal’ is selected
for Warning Timing, if the vehicles
approaches at high speed from the
rear, the initial warning activation
time may seem late.
• Select ‘Late’ for Warning Timing
when traffic is light and when driving
speed is slow.
Information
If the engine is restarted, Warning Timing
and Warning Volume will maintain the
last setting.
Function operation
Function warning
ODN8A070031
Collision warning when exiting vehicle
• When an approaching vehicle from the
rear is detected at the moment a door is
opened, the ‘Watch for traffic’ warning
message will appear on the cluster, and
an audible warning will sound.
• Safe Exit Assist will warn the driver when
your vehicle speed is below 2 mph (3
km/h), and the speed of the approaching
vehicle from the rear is above 3 mph (5
km/h).
While Driving

06
6-83
WARNING
Take the following precautions when
using Safe Exit Assist:
• For your safety, change the Settings
after parking the vehicle at a safe
location.
• If any other function’s warning
message is displayed or audible
warning is generated, Safe Exit
Assist warning message may not be
displayed and audible warning may
not be generated.
• You may not hear the warning sound
of Safe Exit Assist if the surrounding
is noisy.
• Safe Exit Assist does not operate in
all situations or cannot prevent all
collisions.
• Safe Exit Assist may warn the driver
late or may not warn the driver
depending on the road and driving
conditions. Always check vehicle
surroundings.
• The driver and passengers are
responsible for accidents that occurs
while exiting the vehicle. Always
check the surroundings before you
exit the vehicle.
• Never deliberately operate Safe Exit
Assist. Doing so may lead to serious
injury or death.
• Safe Exit Assist does not operate if
there is a problem with Blind-Spot
Safety system. The warning message
of Blind-Spot Safety system will
appear when:
-Blind-

Spot Safety system sensor or
the sensor surrounding is polluted
or covered
- Blind-

Spot Safety system fails to
warn passengers or falsely warn
passengers
Information
After the engine is turned off, Safe Exit
Assist operates approximately for 3
minutes, but turns off immediately if the
doors are locked.